| Abstract Scope |
Global production of electrical steel in 2021 amounted to 5.1 million metric tons, with forecasts for increases of 150% to 12.5 million metric tons to support manufacture of 250-350 million electric vehicles annually by 2030. Growth in demand in other sectors (e.g. unmanned aerial vehicles), and the constant push to higher performance motors requires development of improved electrical steels, via higher strength, higher resistivity and/or lower losses, whilst retaining processability.
This paper discusses use of a Rapid Alloy Production (RAP) facility, coupled with alloy design modelling, in the development and optimisation of electrical steel, particularly focusing on improved performance in high frequency machines. The alloy development approach considers compositional design for high resistivity laminates, processability using standard routes and strength improvement. The work considers grain size evolution through process, assessment of the relationship between grain size and magnetic losses for multifrequency operation and oxidation behaviour. |